DE102011106095A1 - Process for producing a printed product - Google Patents

Abstract

The invention relates to a method for producing a printed product which contains static and individual print image contents, the printed product being produced from at least two printed paper webs which are brought together and the individual printed products are then separated by cross-cutting the paper webs, at least one of the two paper webs having one Printing machine, with a permanent printing form, with static print image contents and at least one further paper web are simultaneously printed with individual print image contents by means of a digital printing machine.

Description

The invention relates to a method for producing a printed product according to claim 1.

It is well known in web-fed rotary printing machines to handle a substrate from one or more rolls and to supply printing units for two-sided printing. For printing, the various sides of a printed product are usually distributed over the width and the circumference of a printing cylinder on a printing form, which are printed on the printing material web with each revolution of the printing cylinder. Ie. Each time the cylinder rotates, the pages are produced for a multi-page printed product, which is then combined in a so-called superstructure and possibly a folding unit of the web-fed rotary printing press to form the printed product. For this purpose, the printing substrate between the individual pages of the printed product is cut longitudinally and superimposed by so-called turning bars according to the page numbers, in order to then optionally attach a longitudinal fold between a double page. Subsequently, the printed products are separated by cross-cutting the longitudinally cut printing material web and, if necessary, also crossfolded.

If the printed product has a page circumference, which exceeds the surface of a printing cylinder, more printing units must be provided, which print one or more further webs.

For multi-color printed products, appropriate printing units must be provided for each required color; H. usually for each multicolored web the primary colors cyan, magenta, yellow and black (CMYK).

With such web-fed rotary printing presses, printed products with large print runs are produced, for example, in newspaper and commercial printing.

Newspaper printing machines usually produce a finished copy of a newspaper from a plurality of paper webs - usually with the offset printing method - via a folding structure.

Commercial printing presses generally also produce finished printed products or parts of a printed product from a web by means of an offset printing process via a folding structure.

Furthermore, the gravure printing as well as the flexographic printing process are generally known.

The offset, gravure and flexographic printing processes work with fixed, d. H. permanent or static printing forms, with which they print a repeating print image on the printing material at each successive printing cycle.

In addition, digital printing machines are also well known, which can produce a changing from printing cycle to printing cycle printing image on a paper web. As digital printing machines, for example, inkjet, toner or liquid toner printing methods are well known. Such digital printing processes are either completely without printing form or have no static printing form, but a printing form, which is newly generated from printing cycle to printing cycle.

Also known are combinations of these printing processes, with which special printed products, such as so-called transaction prints / transpromo prints or even insurance policies, invoices and the like are produced. The static part, i. H. the content identical to each printed product of the print image is pre-produced by a static printing process (for example offset), e.g. B. by a paper web unwound from a roll and printed at high printing speed with the always identically repeated printed image content and wound again on a roll, which then then at mostly slow print speed in a separate print run with a digital printing process with the side individualized to page differing proportion of the printed image.

Combinations of conventional printing methods with digital printing methods, in which the static and the variable, d. H. changing from printing side to printing side, proportion of a printed image can be applied to the printing substrate. An example of this is the integration of an inkjet printing device in one. Printing machine that works with static printing forms - such as an offset printing press. A disadvantage of such combinations is that the print quality of the variable / individual print image is low due to the high printing speed of the static printing process.

The object of the invention is to provide a novel method for producing a printed product.

This object is achieved by the features of claim 1.

By means of the method according to the invention, it is advantageously possible to individualize one or more pages of a printed product with variable contents. There are many advantageous ways, the order of static printed Arrange pages with the individually / variably printed pages.

The inventive method, the static and the individual contents of a printed product can be printed with the optimum print quality for each printing process.

With the method according to the invention, a combination of paper webs from a digital and a conventional web press at the production time is possible, wherein the webs can be brought together at a suitable location in front of the folding structure or in the region of the folding structure. Since the digital web is produced at the same time as the rest of the production, an optimal adaptation is possible in the case of problems in the print production or in the set-up process, so that the waste quantity is advantageously reduced.

Other features and advantages will become apparent from the dependent claims in conjunction with the description.

When referring to conventional printing methods in the context of the invention, what is meant are printing processes associated with physically permanent, i. H. invariable printing forms work and with each successive printing cycle - usually with each revolution of a printing cylinder - an identical, repeated printed image, d. H. static print image content, print on the substrate. Representatives of conventional printing processes include, for example, offset, gravure and flexographic printing processes.

A conventional web-fed printing press according to the current invention, a paper web on a unwinder, preferably a roll changer, which carries 1 or 2 supply rolls and can exchange at full production speed an idler role against a full supply roll (so-called flying reel change), fed and from printing by means of permanent , d. H. static printing plates, preferably printed on both sides. Preferably, 4 printing units are provided for the well-known 4-color printing. Furthermore, so-called folding structure is provided on a conventional web printing machine, in which a paper web to a plurality of sub-webs longitudinally slid over displaceable reversible and / or offset rods laterally and superimposed and can be folded along a former. For separating the printed products, a transverse cutting device is provided, which separates the printed products from the paper web. Preferably, the cross-cutting device adjoins a folding unit, by means of which the printed products can additionally be transversely folded and / or longitudinally folded.

By the digital printing methods mentioned in connection with the invention are meant processes which can produce a print image changing on a paper web from printing cycle to printing cycle. These changing print images are also referred to as individual or variable print image contents in the context of the invention. It may be z. For example, addresses, bar codes, information related to certain addressees, games, and other information that differ from one print product to another or remain the same for a predetermined number of successive printed products and then changed for a further predetermined number of printed products.

Such digital printing processes are either completely without printing form or have no static printing form, but a printing form, which is newly generated from printing cycle to printing cycle. By way of example, digital printing machines include, but are not limited to, inkjet, toner or liquid toner printing processes.

The invention will be explained in more detail with reference to the accompanying schematic drawings. The

1 shows an exemplary digital printing machine in combination with an exemplary illustration printing machine, and

2 FIG. 3 illustrates an example digital press in combination with an exemplary newspaper press. FIG.

In 1 is a combination of a digitally printed paper web 51 with a conventionally printed by a commercial press paper web 14 shown.

The unprinted paper web 14 is this role 10 in a reel splitter 2 taken by the commercial press and by a Einzugwerk 3 led, where the required web tension is built. After the intake 3 becomes the paper web 14 by pressure units 4 guided, which are preferably equipped with so-called double pressure units which the paper web 14 preferably print on both sides with a printed image repeating from web section to web section. The printing units 4 print the paper web 14 successively with the well-known process colors of four-color printing.

The printing units 4 are preferably equipped with printing cylinders, which preferably operate in the offset printing process and whose transfer cylinders or blanket cylinders are employed against each other to serve each as a counter-pressure cylinder for the opposite printing unit. On the respectively associated plate / forme cylinder printing plates are clamped, which wear permanent printing forms with static printed images. These permanent printed images with identical contents are with each revolution of the printing cylinder on the successive web sections of the paper web 14 printed.

In this case, with each cylinder revolution, a plurality of side by side and one behind the other arranged sides of a printed product can be printed on both sides of the paper web. On the lateral surface of the printing cylinder or on the printing for example 8, 16, 24, 32, 48, 64 or 96 sides standing, d. H. upright in the circumferential direction of the printing cylinder, or lying, d. H. aligned transversely to the circumferential direction, be arranged.

In addition to offset printing, the printing units 4 alternatively also work according to the gravure printing or flexographic printing principle or any other printing method which has a permanent printing form.

After the printing units 4 can the paper web 14 through a dryer 5 be led, which serves to dry the wet ink. The dryer 5 can be designed as a generally known so-called heatset dryer. To cool down, the paper web 14 after the dryer 5 over cooled rolls of a cooling plant 6 be directed.

If the printing inks used on the paper web dry by so-called knocking off, a dryer and a cooling unit can be dispensed with.

After the cooling unit 6 becomes the paper web 14 in a so-called folding structure 7 led where the paper web 14 is cut into partial webs by respective slitter-cutters to separate the different (double) sides of a product from each other. To merge the pages of a printed product in the desired order are in Falzaufbau 7 generally known turning bars provided with which the partial webs laterally displaced, turned and placed in the desired relative position over each other. In the folder construction 7 Additional equipment such as units for applying glue, stapling devices, perforating and / or punching devices may be provided. Furthermore, in Falzaufbau 7 Also longitudinal folding devices, such as a Pflugfalz be provided, with which the partial webs can be folded along.

At the outlet of the folder construction 7 is preferably a former 8th arranged over which the superimposed - if necessary already longitudinally folded in the plow fold - partial webs are guided.

The resulting longitudinally folded web strand is then in a folding unit 9 led, where the printed products 1 be separated by transverse cutting of the web strand. In the folder 9 can print products 1 additionally be provided with transverse folds before they can be designed for example via a so-called paddle wheel delivery for further processing.

Parallel to the printing of the first paper web 14 will be another paper web 51 printed by a digital press.

The digital printing machine is preferably via a reel changer 50 endlessly a paper web 51 fed, including the reel changer 50 a receptacle for a first paper roll and a further receptacle for a further paper roll is provided. When emptying the first paper roll, the suitably prepared beginning of the other roll can be glued to the idler web of the first roll. Such reel changers 50 with two or three shots for paper rolls are well known and should therefore not be described in detail here. Such reel changers 50 are suitable to carry out a so-called flying reel change, ie at full production speed to glue a web start of a further paper roll to the already processed in the printing press and possibly expiring paper web.

Such a roll changer is preferably also provided on the illustration printing machine described above.

The from the reel changer 50 unwound paper web 51 becomes a first digital printing unit 52 fed to the paper web 51 printed on the top. The digital printing unit 52 preferably comprises a plurality of printing units for printing the paper web with a corresponding color system, for example CYMK, in multiple colors.

The paper web 51 will be after leaving the first digital printing unit 52 in a turning device 53 preferably turned, then rotated with the previously unprinted bottom up a further digital printing unit 54 to be fed. As a turning device known from the roll pressure turning bar facilities come into question such. B. the cross application. The additional digital printing unit 54 is preferably identical to the first digital printing unit 52 and prints the second side of the paper web 51 ,

The two digital printing units 52 . 54 are each equipped with control and regulating devices by which the printing units are controlled so that the endless paper web 51 can be divided into any section lengths and the successive sections can be printed with different print images. The print images varying from section to section can be, for example, addresses, barcodes, information relating to specific addressees, lottery numbers or other games.

The digital printing units 52 . 54 In addition to the individual print image contents deviating from one another from one part to the next, it is also always possible to print on the paper web repeating print images from one section to another.

The above-mentioned division of the section lengths is preferably based on the section length or finite printing length of the conventional printing machine, i. H. the illustration printing press, tuned.

The digital printing units 52 . 54 Can be used to dry the freshly printed paper web 51 If necessary, commonly known dryer units are assigned.

The digital printing units 52 . 54 For example, without limitation, they may be inkjet, toner, or liquid toner printing.

The paper web 51 will after having the other digital printing unit 54 has left, the folding structure 7 supplied to the commercial printing machine, where this with the printed by the commercial press paper web 14 be led to a common strand of paper together.

The digitally printed paper web 51 can in the folding structure 7 The illustration printing machine are divided by longitudinal cutting in partial webs and laterally offset and / or turned over the turning bar arrangements described above, so that the partial webs of the digitally printed paper web 51 optionally with the partial webs of the conventionally printed paper web 14 can be mixed or formed into a strand.

The in Falzaufbau 7 Additional equipment such as units for applying glue, stapling devices, perforating and / or punching devices, etc. may also be provided on the partial webs of the digitally printed paper web 51 be used.

The strand consisting of digitally and conventionally printed partial webs can, as already described above, be folded longitudinally into a folding unit 9 be guided where the printed products 1 can be separated and transversely folded by cross-cutting the web strand.

In 2 is shown a combination of a digital press with a newspaper press.

The newspaper printing machine is constructed as generally known and consists of several roll changers 30 . 31 . 32 , which are preferably arranged in a basement below the printing units. The roll changer 30 . 31 . 32 wrap paper webs from paper rolls 29 . 33 . 34 from which arranged above towers with the printing units 35 be supplied. The paper webs are from the printing units 35 preferably printed on both sides with a conventional printing process - preferably with the offset printing process - and to a folding structure arranged above it 36 directed. However, it is also conceivable other printing methods with permanent printing forms, such as gravure, flexographic printing, etc.

In the folder construction 36 The paper webs can be cut longitudinally, whereby partial webs arise that can be laterally shifted over turning bars and / or turned over and laid one above the other to one or more web strands can be combined. The web or strands can via a former arrangement 37 be guided, creating a longitudinal fold. The one or more longitudinally folded strands can then each in a folding unit 38 be guided where the printed products 45 be separated by cross-cutting the strands. The web strands can also be prior to singulating the products 45 be combined into a total strand and then cut together across.

In the folder 38 can on the isolated printed products 45 one or more cross folds are attached before the products 45 be designed for further processing. For the printed products 45 they are preferably newspapers.

Parallel to those of the printing units 35 Paper webs conventionally printed with static printed image contents become another paper web 51 printed by a digital press. Since the individual functional units of this digital printing press are essentially made of 1 known Digital press correspond, the same reference numerals have been used.

The digital printing machine is preferably via a reel changer as described above 50 , which is suitable for the flying role change, endlessly a paper web 51 fed.

Such roll changers are preferably also provided on the newspaper printing machine described above.

The from the reel changer 50 unwound paper web 51 becomes a first digital printing unit 52 fed to the paper web 51 printed on the top. The digital printing unit 52 preferably comprises a plurality of printing units for printing the paper web with a corresponding color system, for example CYMK, in multiple colors.

The paper web 51 will be after leaving the first digital printing unit 52 in a turning device 53 preferably turned, then rotated with the previously unprinted bottom up a further digital printing unit 54 to be fed. As a turning device known from the roll pressure turning bar facilities come into question such. B. the cross application. The other digital printing unit 54 is preferably identical to the first digital printing unit 52 and prints the second side of the paper web 51 ,

The two digital printing units 52 . 54 are each equipped with a control and regulating devices by which the printing units are driven so that the endless paper web 51 can be divided into any section lengths and the successive sections can be printed with different print images. The print images varying from section to section can be, for example, addresses, barcodes, information relating to specific addressees, lottery numbers or other games.

The digital printing units 52 . 54 In addition to the individual print image contents deviating from one another from one part to the next, it is also always possible to print on the paper web repeating print images from one section to another.

The above-mentioned division of the section lengths is preferably based on the section length or finite printing length of the conventional printing machine, i. H. the newspaper press, tuned.

The digital printing units 52 . 54 Can be used to dry the freshly printed paper web 51 If necessary, commonly known dryer units are assigned.

The digital printing units 52 . 54 For example, without limitation, they may be inkjet, toner, or liquid toner printing.

The paper web 51 will after having the other digital printing unit 54 has left, over guide rollers o. Ä. The folding structure 36 supplied to the newspaper printing press, where they are performed with the printed by the newspaper printing machine paper webs together to form a common strand of paper web.

The digitally printed paper web 51 can in the folding structure 36 the newspaper printing machine are divided by longitudinal cutting in partial webs and laterally offset and / or turned over well-known turning bar arrangements, so that the partial webs of the digitally printed paper web 51 can be mixed as desired with the partial webs of conventionally printed paper webs or formed into a strand or several strands.

In the folder construction 36 Additional devices such as glue application units, staplers, perforating and / or punching devices, etc. may be provided which can be used on both the digitally and conventionally printed partial webs.

The paper web strand or strands consisting of digitally and conventionally printed partial webs can, as already described above, be folded longitudinally into a folding unit 38 be guided where the printed products 45 can be separated and transversely folded by cross-cutting the strand or web strands.

The essence of the present application is to see that a printed product containing static and individual print image contents is made from at least two paper webs, which are brought together and the individual printed products are then separated by cross-cutting a paper web strand formed from the individual (sub-) webs. wherein at least one of the two paper webs with a printing press, with permanent printing form, with static printed image content and at least one further paper web parallel, d. H. be printed simultaneously by means of a digital printing machine with individual print image content.

LIST OF REFERENCE NUMBERS

1

print product

2

reelstands

3

infeed

4

printing unit

5

dryer

6

cooling tower

7

folding structure

8th

formers

9

folding

10

paper roll

29

paper roll

30

reelstands

31

reelstands

32

reelstands

33

paper roll

34

paper roll

35

printing unit

36

folding structure

37

former arrangement

38

folding

45

print product

50

reelstands

51

paper web

52

Digital printing unit

53

turning device

54

Digital printing unit

Claims (2)

A process for producing a printed product which contains static and individual printed image contents, characterized in that the printed product is produced from at least two printed paper webs, which are combined and the individual printed products are then separated by cross-cutting the paper webs, wherein at least one of the two paper webs with a printing press , with permanent printing form, with static printed image content and at least one further paper web are printed on the same side by means of a digital printing machine with individual print image contents. A method according to claim 1, characterized in that the printing machine with permanent printing form, a web-fed rotary printing press and has a folding structure, in which the paper webs are merged.

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